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We checked the returned unit and confirmed that the image guide fiber bundle (cfb) broken.Based on the result, we concluded that it was caused due to the excessive force applied on the image guide fiber bundle (cfb).In addition, we confirmed that the light guide cable perforated, the insertion flexible tube (ift) buckled, the control body corroded, the insertion flexible tube (ift) crushed, the segment crushed, the operation channel resistance, the ocular frame discolored, and the ocular discolored; however, they are not the main cause, and/or irrelevant to the alleged complaint.Based on the technical report "hr-rpt-0586 (image failure)" and/or the risk analysis results, it was evaluated to submit mdr.
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